Machine for making paper bags



4 Sheets-Sheet 1..

(No Model.)

J. ARKELL. MAGHINE FOR MAKING PAPER BAGS.

Patented Apr. 8, 1890.

(N Model 4 SheetsSheet 2.

J. ARKELL.

MACHINE FOR MAKING PAPER BAGS.

No. 425,197.. Patented Apr. 8, 1890.

(No Mom. 4 Sheets-Sheet 3.

J. ARKELL. MACHINE FOR MAKING PAPER BAGS.

No. 425,197. Patented Apr. 8, 1890.

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4 L L E K R A J v MACHINE FOR MAKING PAPER BAGS. No. 425,197.

Patented Apr. 8, 1890.

Wizfne ssc ,Z'n van 6 UNITED STATES PATENT OFFICE.

JAlWI-ES ARKELL, OF CANAJOHARIE, NEW YORK.

MACHINE FOR MAKING PAPER BAGS.

SPECIFICATION forming part of Letters Patent No. 425,197, dated April 8, 1890.

' Application filed April 3, 1888. Serial No. 269,436. (No model.)

- zen of the United States, residing at Oanajoharie, in the county of Montgomery and State of New York, have invented certain new and useful Improvements in Machines for Making Bags, of which the following is a specification.

My invention relates to machines for making bags; and it consists of the devices and elements and combinations of devices or elements hereinafter described, and specifically set forth in the claim.

My present invention relates to that type or class of paper-bag machines which is adapted to the manufacture of satchel-bottom bags, an example of which kind of machine may be seen in United States Letters Patent granted to inc-December 26, 1871, No. 122,099, and reissued July 29, 187 9; and my invention consists in the novel device or contrivance for in suring and effecting the lifting upwardly and partially folding over of the first-turned flap, which has to be folded over and pasted down in forming the satchel-like bottom of the bag.

In the course of my practical and extensive experience with paper-bag machines of that type shown and described in my said Letters Patent above referred to I have found that it was practically impossible to successfully run such machine as fast fas it might otherwise be operated, on account of the practical difficulty in moving or operating the lifting and folding blades or folder device used in such a machine for the purpose of gathering up from the face of the revolving cylinder and folding over that portion of the bag-blank which constitutes the first-folded flap manipulated by such pasting and folding machine. These folder blades or devices as heretofore made and as shown and described in my said Letters Patent move upon pivotal points which travel with the revolving cylinder of the machine. The operative ends of the folders swing in the are of the circle and in a plane approximately parallel with the face of the cylinder. They have therefore at each folding operation to each make a back and forth stroke or vibration; and, having thus to be vibrated in first one direction and then another, I have found it to be practically impossible to increase the speed of the machine to what it might otherwise be run at without causing frequent derangement and rapid destruction of the working parts of the mechanism by which the said folders are thus thrown alternately' and rapidly back and forth to perform the functionfor which they are employed. By my present invention or improvement I have dispensed with such folder-blades for turning the first-folded flap of the satchelbottom and have substituted therefor a de vice which is capable of such rapid operation that the machine may be run at a much. greater speed without danger of any derangement of any of its parts, and consequently can be made to turn out a greater number of bags in a given time than it was possible to make in the same time on such machine as was hereto fore constructed.

In order that those skilled in the art may make and use my improvement, I will now proceed to describe the same by reference to the accompanying drawings, which form part of this specification, an d in whichI have shown my invention carried out in that precise form in which I have so far successfully practiced it, and applied to amachine substantially like that made the subject of my patent hereinbefore referred to.

In the drawings, Figure 1 is a side elevation of my improved machine. Fig. 2 is a front view of the same. Fig. 3 is a top view with the pasting-wheel and hopper removed to expose to view the parts and devices below, and illustrating paper bags in process of completion and in the proper position on the cylinder of the machine preparatory to being carried to the pasting and folding mechanisms. Fig. 4 is a partial elevation, on alarge scale, illustrating the turning of the folded flaps, &c., according to my present improvement.

In the several figures the same part will be found always designated by the same letter of reference.

In the drawings, A is the frame-work of the machine.

B is the revolving cylinder, on the periphery of which travel the bag-blanks which are to be pasted and folded at one end to complete the satchel-bottom thereof.

0 is the pasting-wheel, which runs with its face to and from the pasting-recepiacle D, as indicated by the arrow in Fig. l.

E E are the regislering-lingers, formed with arms E, which are vibrated vertically on shaft E by means of the crank-arm c, pitman c, and cam c on the shaft of cylinder 1).

F are the revolving creaser-bhules.

G is the fold-pressing device, which is mounted on shaft g and revolved by the bandwheels G G in the direction indicated. As shown, the cylinder 1 has secured on its periphery a series of sectional strips a u and u a, which are arranged at short distances apart, and which are made to project from the surface of thecylinder, as shown,these strips in the aggregate forming the bed or surface on which the bag'blank rests while being carried around by the cylinder, and while subjected to the pasting and folding operations.

H II are the elastic fingers, by means of which and the usual tapes or bands the bagblanks fed into the machine are gripped and properly carried along with the cylinder, all of which parts, both as to their construction and mode of operation, are old and substan tially like what is shown and described in my said Letters Patent.

K are the novel devices employed according to my present invention for insuring and effecting the liftingup and partially turning over of the first-folded flap, which is made by the machine in forming or completing the satchel-like bottom of the bag. This finger is shown secured to the end of the arm 7:, which is fixed to the free end of the lever K and is about opposite to a line at the middle lengthwise of the face of the cylinder B. This lever is pivoted at K to the frame of the machine, or to a piece secured thereto, and has given to it a tension by means of the spring lo which tension operates to throw the said lever in a direction opposite that indicated by the arrow in the drawings.

L is a cam secured to the shaft f of the revolving creaser-blades F, so as to revolve with the same. This cam, as it is revolved in the direction indicated by the arrow, operates at stated times against the upper end of the lever K, or against a friction-roller l, pivoted in the said lever, as shown in Fig. 1,10 throw the long arms of said lever outwardly in the direction indicated by arrow and hold it in that situation for a short time and until the cam has been revolved so as to bring its flap and straight line of surface opposite said friction-roller, when the tension -spring 75 will imparta quick movement to said arm, so as to cause the fold lifting and turning finger to almost touch the middle strip a, and thus come into contact with the paper resting on that strip.

It is to be understood that for the purpose of turning down or folding over the lastformed flap of the satchel-bottom precisely the same devices are employed as are shown and described for that purpose in the drawings and specification of my said reissued patent, heretofore referred. to.

The general operation of myimproved machine may be thus briefly explained. The drawings at Figs. 3 and 6 show the bottom end portion of an uncompleted paper bag which is being carried by the cylinder B and its adjuncts to the folding mechanisms to be operated upon, thereby to effect the turning and folding of the bottom flaps m and a, respectively, into place on the top portion, so to speak, of the bottom of the bag. As the cylinder 13 revolves with the elastic fingers Hand endless bands I, firmly holding the bagblanks I, the latter would be carried progressively forward and beneath the pastingwheel with the section or fold m leading and the flap-section a following, as shown by full lines in Figs. 3 and G, and is then carried toward and opposite to the pair of creasingblades F and the improved novel turning device K. \Vhen in this forward movement of the bag-blank 1 the free end edge of its fold in is about at the point c, Fig. 4, the cam L will be moved to such a position that it will be out of pressing-contact with the frictionwheel Z or lever K, and the instant this pressure of said cam on said lever ceases the tension-spring 762 will operate to move the finger K with great rapidity toward the cylinder and into a position in front of the leading end of the said section-fold m, and will. there remain until the action of the cam L on lever K will throw said lever and the finger K back to its normal position, as shown by full lines in Fig. -i-, and as the progressive movement of the bag-blank P is continued past the finger K, while the latter is in the position indicated by a dotted line, as at Fig. i, the forward movement of the fold-section m will be momentarily checked by the presence of the finger K, although the body portion of the bag-blank I will continue to move along, so 7 IIO ted line in the partially-foldcd-over flap will pass into the bite of the pressure device Gr, which will effect a final depression and pasting down of the bottom fold m. The rotation of the cylinder continuing, the bag-blank P, with its completely-folded-down bottom sections m and a, will be delivered from between the bands I and the strips which form the bed or working surface of the cylinder B.

It will be understood that in carrying my invention into operation mere modifications and variations in the details of construction of the mechanism shown. may be made without departing from the spirit of my improvement, and that either one or more of such folding-over fingers as I have shown at K may be used, according to the size of the bag and its fold and the degree of stiffness of the paper of which the bag may be manufactured.

Having now so fully explained the nature of my invention that those skilled in the art verse to the axis of the latter and to recede from the cylinder in the same plane or path of motion after having partially turned over the flap to be folded, all in substantially the r 5 manner and for the purposes hereinbefore set forth.

JAMES ARKELL.

WVitnesses:

GEO. H. SMITH, P. D. VAN OLINDER. 

